Misc Hacks

4188 Articles

Massive Etch A Sketch From TV Screen

May 13, 2009 by 32 Comments

[youtube=http://www.youtube.com/watch?v=Mhu3zojL5Y4]

[Jeri] put together an absolutely massive Etch A Sketch for The FatMan and Circuit Girl show. She had removed the DLP chip from an HD rear projection TV and decided to repurpose the 52inch screen. The movement mechanism uses pulleys from screen doors with nylon lines. The two sets of lines are fed in a criss cross pattern so that the parallel lines move in the same direction. The lines move tent poles in the x and y which controls the movements of the golf tee stylus. It’s driven by two high torque motors from $9 Harbor Freight 18V drills. They tried several different powders, but ended up using aluminum powder from an original Etch A Sketch because it sticks to everything. It will eventually be hooked up for IRC bot control once they get a large enough h-bridge.

[via adafruit]

Home Made R/C System

May 9, 2009 by 23 Comments

[youtube=http://www.youtube.com/watch?v=HI3KNy9GKB8]

[dunk] sent his home made Radio Control system. It is constructed from a Playstation 2 controller, an Atmega 2561, microcontroller, some RF modules and various servos and motors. It seems to work pretty well. You can get all the schematics and source code on his site. Several people have submitted a similar project which involves an iPhone and a helicopter, but that one is a bit dubious, mainly due to it’s lack of detail.

APRS Tracking

May 4, 2009 by 43 Comments

aprs

We really wish we had a little more information on the construction of this, but [Jeff] made this APRS tracker several years ago. APRS, or Automatic Packet Reporting System is a system where shortwave radios put out small packets of data that are uploaded to a database available via the web. This specific one is relaying GPS data so his family can see where they are located. With current phones, you might think this is antiquated, but he notes that he took this through New Mexico and was able to transmit his position even when there was zero cell phone coverage.

WikiBrowser

May 2, 2009 by 33 Comments

[youtube=http://www.youtube.com/watch?v=H1TelXmRQs0]

This project is particularly amusing. It doesn’t have a whole lot of practical use, but it makes up for it in style. They have an SD card with Wikipedia from 2003 downloaded to it. This is accessed with a Parallax propeller microcontroller based system and displayed on a small retro looking screen. We like it. We don’t think we would ever actually use it, but we would definitely keep it around.

Face Tracking In Opera

April 30, 2009 by 4 Comments

[youtube=http://www.youtube.com/watch?v=1ioV2Dj56iw]

Inspired by this year’s april fools day joke from Opera, [Jason] has made facial gesture recognition actually work. While this may seem like a silly project, it could seriously help some people out. This could be a great accessibility tool for people with motor control limitations.He states that it has some problems right now, most notably a performance issue with extended use, so he’s hoping to get some input from some bright minds.

[thanks, Jordan]

The Cloud Mirror

April 29, 2009 by 10 Comments

[vimeo=4370631]

Cloud Mirror is an interactive art installation that combines you and your easily available online information in real time. Attendees stood in front of the camera and held up their badges. Cloud Mirror then projected them on the wall and displayed a speech bubble containing information from the web. In the example after the break, you can see our very own [Eliot] displayed with his most recent twitter post. To add another layer to it, you could send a text message with someone’s badge ID to the system and it will display your message in that person’s bubble.

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